Answer:
Commensalism
Explanation:
Commensalism is one example of the behavior of a goby and shark.
Soap is a surfactant that contains hydrophobic or water-fearing and hydrophilic or water-loving ends that is used for cleaning dirt. These hydrophobic and hydrophilic properties are what causes the surface tension of the fats and oils to lower.
Answer: The color of a star plays a significant role in determining its age as well as its temperature. A star normally appears to be shining as we see through the atmosphere. An increase in the temperature of a star releases more energy and this can be observed in the various colors of color spectrum.
The hottest star generally appears to be bluish-white in color whereas the coldest star usually appears to be reddish in color.
Thus, a star's color can help us determining its temperature.
Answer:
1. In a coal-fired power plant, chemical energy is first converted to thermal energy. TRUE.
The chemical energy in the coal is converted to thermal energy when the coal is burnt to produce steam.
2. In a coal-fired power plant, approximately 2/5 of original energy in the coal is lost to heat. FALSE.
Approximately 3/5 of the original energy is lost not 2/5 so this statement is false.
3. The molecules in cold air move faster than in hot air. FALSE.
Molecules with more heat move faster than molecules with less. Molecules in cold air therefore, will move slower than molecules in hot air.
